Used in biomedical research to detect and quantify cytokeratin 20 levels in human tissue samples and body fluids. Helps in the identification and monitoring of epithelial cell-derived cancers, particularly colorectal, gastric, and bladder carcinomas. Supports studies on tumor progression, metastasis, and response to therapy. Widely applied in clinical laboratories and research settings for diagnostic development and biomarker validation. Enables high-throughput screening with high sensitivity and specificity.